问题描述
我有16个 radio 按钮，它们是一个调查的两个问题的一部分(每个问题8个按钮).回答完两个问题后， php 会重定向到相同的下一页，依此类推，以此类推.
I have 16 radio buttons that are part of two questions for a survey ( 8 buttons per question). When both questions have been answered, the php redirects to the next page which is identical, and so on and so forth.
当在浏览器中按下后退按钮时，我希望前面的两个答案仍能被选中.在Chrome中，前两个答案中的一个始终保持为选中.在Safari中，先前的两个答案都保持选中状态，这正是我所期望的.这不是一个大问题，但是如果Chrome的行为方式相同，那将是一个很好的选择.我还确保两个缓存都被清空，等等.
When the back button is pressed in the browser, I expected both previous answers to still be checked. In Chrome, one previous answer out of two always remains checked. In Safari, both previous answers remain checked, which is what I expected. Its not a huge problem, but it would be good if Chrome behaved the same way. I've also made sure both caches were emptied, etc.
我昨天发布了一个相关问题，显示了我如何显示和验证 radio 按钮:
I posted a related question yesterday which shows how I am displaying and validating the radio buttons:
如果这还不够，我可以发布更多代码.
If this is not sufficient, I can post more code.
推荐答案
您最可能需要做的就是使用$ _SESSION ['answer_1'] = 1;之类的方法来跟踪每个问题的答案.
Most likely what you need to do is track each question's answers using something like $_SESSION['answer_1'] = 1;
然后，您需要通过禁用自动完成功能来确保浏览器不会控制表单的状态:
Then you need to make sure your browsers do not control the form's state by disabling autocomplete:
<form action="some_file.php" method="post" autocomplete="off">
然后您需要做的就是在表单中添加它:
And then all you need to do is add this in your forms:
<Input type='radio' name='question1choice1' value= '1' <?=(($_SESSION['answer_1' == 1) ? 'checked' : 'unchecked');?>Choice 1
<Input type='radio' name='question1choice2' value= '2' <?=(($_SESSION['answer_1' == 2) ? 'checked' : 'unchecked');?>Choice 2
这篇关于在Chrome中按下后退按钮时，单选按钮选择问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！